Pokémon/Pokédex/Porygon

How to Evolve
Porygon will evolve if it is traded with an Up-Grade.

If the recipient is playing Fire Red or Leaf Green and does not have the National Pokédex, the evolution will not be able to take place. Porygon can not evolve at all in Pokémon Green, Pokémon Red, Pokémon Blue, Pokémon Yellow, Pokémon Let's Go Eevee, and Let's Go Pikachu.

TM/HM

 * RB/Y/GS/C/RS/FL: Blizzard, Double Team, Flash, Hyper Beam, Psychic, Rest, Thunder, Toxic
 * RB/Y/C/RS/FL: Ice Beam, Thunderbolt
 * RB/Y/GS/C: Swift
 * GS/C/RS/FL: Frustration, Hidden Power, Iron Tail, Protect, Rain Dance, Return, Sunny Day, Thief
 * RB/Y: Bide, Double-Edge, Mimic, Psywave, Rage, Reflect, Skull Bash, Substitute, Take Down, Teleport, Thunder Wave, Tri Attack
 * GS/C: Curse, Dream Eater, Endure, Icy Wind, Nightmare, Psych Up, Sleep Talk, Snore, Swagger, Zap Cannon
 * RS/FL: Aerial Ace, Facade, Secret Power, Shadow Ball, Shock Wave, Solarbeam

Trading Cards

 * Base Set #39 - Porygon
 * Team Rocket #48 - Porygon
 * Gym Challenge #98 - Sabrina's Porygon
 * Neo Destiny #77 - Porygon
 * Aquapolis #103a - Porygon
 * Aquapolis #103b - Porygon
 * EX FireRed & LeafGren #47 - Porygon